Improvement in fife-couplings



JOSEPH R. BROWN, OF NEW HAVEN, CCNNEC'IICUI.l

Leners Patent No. 103,423, dazed May 24, 1870.

IMPRQVEMENT IN PIPE-comunes.

The Schedule refered to in these Letters 'Patent and making part of the same..

To all whom. it may concern;

`Be it known that I, J osera R. BROWN, of New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in. Couplings for Steam orWater-lipes; and I do hereby declare that thevfollowing is a full and ex- `act description of the same, reference being had to the accompanying drawings and to the letters of reference marked thereon.

`)Figure 1 is a longitudinal section, showing the two flanges together.

`1iigure2 isa face view of the anges.

.Figure 3 isa sec-tion, showing the'adaptation of my,improvementv to cast-ironpipes.

Similar letters of reference, when they occur' in the separate views, indicate like parts.

My invention. relates to an improvement in the method of jointing water or steam-pipes; and consists of a male and vfemale flange, placed upon the ends of the pipe, and held there securely by having the pipe 'rolledor expanded into the flanges byan expanding-tool, thegroove vinthe female ange to be filled with red lead or' other suitable substance, and

the wholeheld together by a sufficient number of' b'olts through the said anges.-

In large steam-pipes,where couplings with anges are used, the great trouble has been that the packing,.

if rubber is used, soon' becomes hard, by heat of the steam, and, in this condition, does not form an elastic packing, as originally, and `the joint thus made be,-

comes a leaky'one, and hasY to be repacked, which can only be done when the steam is down, which often'canses great inconvenience and expense. Ifcement -be used for the packing, it requires a large amount of it, and is a very slow method of packing,

and is very liable to be compressed out into the pipe.

'It salso desirable touse very thin wrought-iron pipes, such as lap-welded boiler-fines, and the pres-` ent method is toont a screw on the end of the same, andrnaking the joint by screwing the pipe so cut into couplings, which have a corresponding thread cut on the-inside of the same.` This method is very objectionable, because the thread or screw, to be of sulicient depth to make a 4perfect joint, cuts nearly through the pipe, making it very weak at this point,

and soon rnsts through/or breaks off; also, screwjoints, on large pipe, are very diliicult to make tight.

With my improvement, however, I obviate all these Objections and am able to form a perfectly tight, strong joint, with less labor and expense Vthan can possibly be accomplished in any other method now made use of.

To enable others skilled inthe art to make and use my improved coupling, I will proceed to describe the construction and operation of the same, with reference'to the accompanying drawings.

A is a section of pipe, upon which the male flange B is placed, which is provided with the projection a, extending aroundit, as shown in lig. 2.

C is another section of pipe, upon which thei'emalel Harige D is held, which is provided with a groove, b, to correspond with the projection a upon the flange B. When the flanges are jointed together, the groove b is illed with red led orother suitable material, after which the male ange B is placed in positiolnthe projection a upon it entersl the groove b, and displaces a certain portion of the substance used as packing, and thetwo iianges are inthe relative positions as shown in fig; l, where they are held by means of bolts lo.

` The steam or .watercan have no direct action upon the packing, as'the joint is effectualiy broken, and the pressure istaken by the met-al of' the ange, and thus all liability to have the packing blown out is avoided. 'Instead of beingscrewed upon the pipe, the anges are cored out sufficiently to freely admit the full'diameter of the said piperv The core is made a little Alarger at or near the face of the flange, and tapers down to the outer end, as shown in the drawing. '.l.he ange is fastened upon the pipe by placing it overk the tube, and inserting therein an expander, such as is commonly usedin expanding boiler-tubes, and the end of the tube is expanded until a tight joint is formed.

Having thus fully described my invention,

fhat I claim as new and useful, and desire to secure by Letters Patent, is

A pipe-coupling, iny which the pipes A and B abut against the central flanges (l d of the sectional collar -B D, having the recess b and bead a, and are flared into recesses, andthus united to the collar by means of rolling, all substantially as described.

vThis specification signed and witnessed this 18th January, 1870. v

JOSEPH R. BROWN. Witnesses :Y

NOBLE I. Brsnor, IP RANK IRnscorr. 

